1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd040a83093c0a0d31bb49d87893a8c3d390224d3ba86dcf3be06fb71f618308f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d59da3da-3f01-4d59-a8a7-968d2e0b7411.json and https://artists.proofprofile.net/proofs/artist/d59da3da-3f01-4d59-a8a7-968d2e0b7411.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beethoven: Symphony No. 5, Op. 67 (Live)
Brahms: Ein Deutsches Requiem, Op. 45 (Live)
Berlioz: Symphonie Fantastique, H 48 (Live)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0a4054ae6382d8935da3f56a9f50855f9ce8d14586f53bb42b7eb5ac775947. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD542001952.
Madama Butterfly, SC 74, Act I: "Viene la sera" (Cio-Cio-San, Pinkerton, Suzuki)
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Dvořák: Symphony No. 9 "From the New World"
Symphony No. 9 in E Minor, Op. 95 "From the New World": I. Adagio - Allegro molto
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Symphony No. 9 in E Minor, Op. 95 "From the New World": IV. Allegro con fuoco
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Violin Concerto, Op. 35: I. Allegro moderato - Moderato assai
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Badinage - Arr. for String Chamber Orchestra and Trumpet
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Sonate for Trumpet: I. Sarabande - Arr. for String Chamber Orchestra and Trumpet
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Sonate for Trumpet: III. Spiritual - Arr. for String Chamber Orchestra and Trumpet
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Imatges for Flute and Trombone (Gaubert, Saint-Saëns, Bozza, Dutilleux, Martin)
Castéréde: Sonatine (for Trombone & Piano): III. Allegro
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Mozart: Così fan tutte, K. 588: "Overture" (Live)
Così fan tutte, K. 588: "Overture" - Live
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Mozart: Le Nozze di Figaro, K. 492: "Overture" (Live)
Overture zum Märchen von der schönen Melusine, Op. 32 (Live)
Mozart: Oboe Concerto in C Major, K. 314
Oboe Concerto in C Major, K. 314: I. Allegro aperto
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Oboe Concerto in C Major, K. 314: II. Adagio non troppo
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Oboe Concerto in C Major, K. 314: III. Rondò. Allegretto
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Orchestral Suite No. 3 in D Major, BWV 1068: II. Air on the G String
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Slavonic Dances, Op. 46: No. 4, Sousedská
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe106aa258d55172c6d0058b408c300feced5e1a7eb34322cf237d65941690a99. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD542001645.
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L'Arlésienne Suite No. 2, GB 121b: IV. Farandole
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Serenade for Strings in E Minor, Op. 20: II. Larghetto
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Serenade for Strings in E Minor, Op. 20: III. Allegretto
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00219c2a757f658c1beea0f0812b3eb7fda14bde141f8a3fe92ba9349e131430. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD542001397.
Concerto Grosso for Strings "Palladio": I. Allegretto
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8417c449642eb2d556677d4ca6a720e6b1602d5943a3de28c18c038b90d2e1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD541702674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09debf783191fa59e9a38bd78946770c5b7b99f5959aa0e1287efba5d0c939b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD541702696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0acee4279e1bfd5d912d1fc6946b1a1e01b062776b3a217a846dc875e02546. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD541900334.
Waltzes, Op. 64: No. 1 in D-Flat Major "Minute Waltz"
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f92c7cdc158576c1e65f9a150d5d0a9db0ecb235c5cc94e857f3e039b396a1c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD541900242.
Symphony No. 3 in E-Flat Major, Op. 55 "Eroica": I. Allegro con brio
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Symphony No. 4 in A Major, Op. 90 "Italian": IV. Saltarello. Presto
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Classical Music for When You're on a Deadline
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Pelléas et Mélisande: VII. La chasse commence
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The Marriage of Figaro, K. 492: "Overture"
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Eine kleine Nachtmusik in G Major, K. 525: I. Allegro
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Eine kleine Nachtmusik in G Major, K. 525: IV. Rondò. Allegro
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Le nozze di Figaro, K. 492, Act I: "Non più andrai" - Instrumental Version
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Don Giovanni, K. 527, Act I: "Madamina il catalogo è questo" - Instrumental Version
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Solomon, HWV 67: Arrival of the Queen of Sheba
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Un ballo in Maschera: "Saper vorreste" - Instrumental Version
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La Traviata: "Sempre Libera" - Instrumental
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Guillaume Tell Overture: IV. March of the Swiss Soldiers - Live
Orchestra Sinfonica dell'Università Cattolica di Milano
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The Nutcracker, Op. 71a: Dance of the Sugar Plum Fairy - Arr. for Piano
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Symphony No. 9, Op. 125 "Choral": I. Allegro ma non troppo, un poco maestoso
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Symphony No. 9, Op. 125 "Choral": II. Scherzo. Molto vivace
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Symphony No. 9, Op. 125 "Choral": III. Adagio molto e cantabile
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Symphony No. 9, Op. 125 "Choral": IV. Finale "Ode to Joy"
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Symphony No. 6 in F Major, Op. 68 "Pastoral": IV. Thunder. Storm
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